N-(2-苯乙基)-4-哌啶酮

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: As indicated in Scheme 11-D above, the desired mPEGn-O-fentanyl conjugates were prepared by first reacting 1-phenethylpiperidin-4-one with 3-aminophenol under reducing conditions to thereby convert the keto functionality into an amine, i.e., by reaction with the amino group of 3-aminophenol. The product, 3-(1-phenethylpiperidin-4-ylamino)phenol, was then reacted with propionic anhydride in the presence of base (e.g., triethyl amine) and dimethylaminopyridine (DMAP) under conditions effective to form N-(3-hydroxyphenyl)-N-(1-phenethylpiperidin-4-yl)propionamide. Finally, introduction of the oligomeric PEG functionality was carried out by reacting the precursor, N-(3-hydroxyphenyl)-N-(1-phenethylpiperidin-4-yl)propionamide, with a molar excess of mPEGoligotosylate under coupling conditions effective to form the desired conjugates. Ratios of reactants and reaction conditions generally employed are provided in the reaction schemes above. were prepared

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 1-(2-Phenylethyl)-4-piperidone oxime is prepared from 1-(2-phenylethyl)-4-piperidone and hydroxylamine hydrochloride essentially as described above in Example 38, Scheme C, step b.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 1-(2-phenylethyl)-4-piperidone is prepared from 4-piperidone and (2-chloroethyl)benzene essentially as described above in Example 38, Scheme C, step a.

反应条件: temp:190.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 28.0 g of 5-hydrazino-3-phenylbenzothiophene hydrochloride are allowed to react with 21.0 g of N-(2-phenethyl)-4-piperidone in 500 ml of isopropanol at room temperature for 2 hours. After filtering off the crystall sludge, this is suspended in 150 ml of N NaOH and the suspension is extracted with methylene chloride. The organic phase is washed with water until neutral and evaporated, the oily residue is taken up in 400 ml of ethylene glycol and the mixture is heated to 190° C. for 30 minutes. The substance which has crystallised out after cooling is filtered off and recrystallised from toluene. Melting point: 220°-221° C. After filtering off the crystall sludge the suspension is extracted with methylene chloride The organic phase is washed with water until neutral and evaporated The substance which has crystallised out after cooling is filtered off recrystallised from toluene

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: As indicated in Scheme 11-D above, the desired mPEGn-O-fentanyl conjugates were prepared by first reacting 1-phenethylpiperidin-4-one with 3-aminophenol under reducing conditions to thereby convert the keto functionality into an amine, i.e., by reaction with the amino group of 3-aminophenol. The product, 3-(1-phenethylpiperidin-4-ylamino)phenol, was then reacted with propionic anhydride in the presence of base (e.g., triethyl amine) and dimethylaminopyridine (DMAP) under conditions effective to form N-(3-hydroxyphenyl)-N-(1-phenethylpiperidin-4-yl)propionamide. Finally, introduction of the oligomeric PEG functionality was carried out by reacting the precursor, N-(3-hydroxyphenyl)-N-(1-phenethylpiperidin-4-yl-propionamide, with a molar excess of mPEGoligotosylate under coupling conditions effective to form the desired conjugates. Ratios of reactants and reaction conditions generally employed are provided in the reaction schemes above. were prepared

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: As indicated in Scheme 11-D above, the desired mPEGn-O-fentanyl conjugates were prepared by first reacting 1-phenethylpiperidin-4-one with 3-aminophenol under reducing conditions to thereby convert the keto functionality into an amine, i.e., by reaction with the amino group of 3-aminophenol. The product, 3-(1-phenethylpiperidin-4-ylamino)phenol, was then reacted with propionic anhydride in the presence of base (e.g., triethyl amine) and dimethylaminopyridine (DMAP) under conditions effective to form N-(3-hydroxyphenyl)-N-(1-phenethylpiperidin-4-yl)propionamide. Finally, introduction of the oligomeric PEG functionality was carried out by reacting the precursor, N-(3-hydroxyphenyl)-N-(1-phenethylpiperidin-4-yl-propionamide, with a molar excess of mPEGoligotosylate under coupling conditions effective to form the desired conjugates. Ratios of reactants and reaction conditions generally employed are provided in the reaction schemes above. were prepared